기초의 크기효과에 관한 수치해석

Abstract

Abstract Finite element analyses were conducted to investigate the size effect on the bearing capacity and settlementof shallow foundations, and the results were compared with those of theoretical equations. The calculated bearing capacity of the plate by numerical analysis and the theoretical equation was similar. Numerical analyses showed thatthe ultimate bearing capacity of strip footing on sand was affected by the size effect, whereas the ultimate bearingcapacity of strip footing on clay was not affected by the size effect. Numerical analyses showed that the square footing was unaffected by the size effect regardless of the type of foundation soil. In contrast to theoretical equations,settlement of the footing was affected by the size effect and was proportional to the footing width. Key Words : Size effect, Finite element analysis, Plate, Strip footing, Square footing * Corresponding Author : Jin-Tae Han(Korea Institute of Construction Technology)Tel: +82-31-910-0259 email: jimmyhan@kict.re.krReceived July, 29, 2014 Revised(1st September, 25, 2014, 2nd October, 1, 2014) Accepted January, 08, 2015